Lunch delivery or catering in Back Bay?

I am hosting a lunch in-house (in an office) in the Back Bay area next week. My company would like to bring in lunch for 15-20 people and I'm looking for suggestions that may be a treat (we're paying) beyond "sandwiches".

Mexican or Spanish food would be great or even great Asian Fusion or Japanese (looking to play off a "hot" theme at this event). Any recommendations or suggestions would be much appreciated!

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